52 SILPHA. 



outline : of this kind is the S. thoratica, which is 

 easily distinguishable by its red thorax, every 

 other part of the animal being coal-black; it is 

 about half an inch in length. 



Silpha atrata is of similar size, but totally black, 

 and has the wing-sheaths marked by three rising 

 lines: its larva, which may be found in gardens, 

 is of a lengthened shape and of a black colour. 



The genus Silpha may be considered as a numer- 

 ous one, but few of the species are of any great 

 beauty, and many are of very small size. 



